Iron group transition metal-refractory metal-boron glassy alloys

Specialized metallurgical processes – compositions for use therei – Processes – Free metal or alloy reductant contains magnesium

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75122, 75123B, 75123J, 75134F, 75170, C22C 1900, C22C 3806, C22C 3832

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active

042104432

ABSTRACT:
Glassy alloys containing iron, cobalt and nickel plus molybdenum and/or tungsten, together with low boron content, are disclosed. The glassy alloys of the invention consist essentially of about 5 to 10 atom percent boron, about 5 to 15 atom percent molybdenum and/or tungsten and the balance essentially iron, cobalt and nickel plus incidental impurities. Each of the iron group metals must be present in an amount of at least about 5 atom percent. The glassy alloys evidence hardness values of at least about 1000 Kg/mm.sup.2, ultimate tensile strengths of at least about 350 Kpsi and crystallization temperatures of at least about 445.degree. C.

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patent: 4056411 (1977-11-01), Chen et al.
patent: 4067732 (1978-01-01), Ray
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